system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-24 20:29:05 +00:00
Code Issues Packages Projects Releases Wiki Activity

ixgbe: fix header len when unsplit packet overflows to data buffer

Browse source 
When in packet split mode, packet type is not recognized, and the packet is
larger than the header size, the 82599 overflows the packet into the data
area, but doesn't set the HDR_LEN field.  We can safely assume the length
is the current header size.  This fixes an obscure corner case that can be
triggered by non-ip packet headers or (more likely) by disabling the L2
packet recognition.

Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shannon Nelson 2010-05-18 16:00:03 +00:00 committed by David S. Miller
parent 622ccdf107
commit 0b746e08cd
1 changed files with 3 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/net/ixgbe/ixgbe_main.c
View file

@ -1201,9 +1201,10 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
hdr_info = le16_to_cpu(ixgbe_get_hdr_info(rx_desc));
len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >>
IXGBE_RXDADV_HDRBUFLEN_SHIFT;
if (len > IXGBE_RX_HDR_SIZE)
len = IXGBE_RX_HDR_SIZE;
upper_len = le16_to_cpu(rx_desc->wb.upper.length);
if ((len > IXGBE_RX_HDR_SIZE) ||
(upper_len && !(hdr_info & IXGBE_RXDADV_SPH)))
len = IXGBE_RX_HDR_SIZE;
} else {
len = le16_to_cpu(rx_desc->wb.upper.length);
}